Nissan Pathfinder (2008 year). Manual — part 88
BRC-10
< BASIC INSPECTION >
[VDC/TCS/ABS]
DIAGNOSIS AND REPAIR WORKFLOW
Diagnostic Work Sheet
INFOID:0000000001690791
SFIA3265E
INSPECTION AND ADJUSTMENT
BRC-11
< BASIC INSPECTION >
[VDC/TCS/ABS]
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INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Description
INFOID:0000000001690792
After replacing the ABS actuator and electric unit (control unit), perform the following procedures:
• Neutral position adjustment for the steering angle sensor
• Calibration of the decel G sensor
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Re-
quirement
INFOID:0000000001690793
1.
PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
Perform the neutral position adjustment for the steering angle sensor.
>> Refer to
BRC-11, "ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Spe-
, GO TO 2
2.
PERFORM CALIBRATION OF THE DECEL G SENSOR
Perform calibration of the decel G sensor.
>> Refer to
BRC-12, "CALIBRATION OF DECEL G SENSOR : Special Repair Requirement"
.
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Description
INFOID:0000000001690794
Refer to the table below to determine if adjustment of steering angle sensor neutral position is required.
×
: Required –: Not required
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION : Special Re-
pair Requirement
INFOID:0000000001690795
ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION
CAUTION:
To adjust neutral position of steering angle sensor, make sure to use CONSULT-III
(Adjustment cannot be done without CONSULT-III)
1.
ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
Situation
Adjustment of steering angle sensor neutral position
Removing/Installing ABS actuator and electric unit (control unit)
—
Replacing ABS actuator and electric unit (control unit)
×
Removing/Installing steering angle sensor
×
Replacing steering angle sensor
×
Removing/Installing steering components
×
Replacing steering components
×
Removing/Installing suspension components
×
Replacing suspension components
×
Change tires to new ones
—
Tire rotation
—
Adjusting wheel alignment
×
BRC-12
< BASIC INSPECTION >
[VDC/TCS/ABS]
INSPECTION AND ADJUSTMENT
>> GO TO 2
2.
PERFORM THE NEUTRAL POSITION ADJUSTMENT FOR THE STEERING ANGLE SENSOR
1.
On the CONSULT-III screen, touch “WORK SUPPORT” and “ST ANG SEN ADJUSTMENT” in order.
2.
Touch “START”.
CAUTION:
Do not touch steering wheel while adjusting steering angle sensor.
3.
After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4.
Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
>> GO TO 3
3.
CHECK DATA MONITOR
1.
Run vehicle with front wheels in straight-ahead position, then stop.
2.
Select “DATA MONITOR”. Then make sure “STR ANGLE SIG” is within 0
±
2.5
°
.
Is the steering angle within the specified range?
YES
>> GO TO 4
NO
>> Perform the neutral position adjustment for the steering angle sensor again, GO TO 1
4.
ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.
• ABS actuator and electric unit (control unit): Refer to
BRC-21, "CONSULT-III Function (ABS)"
.
• ECM: Refer to
EC-74, "CONSULT-III Function (ENGINE)"
(VK56DE).
Are the memories erased?
YES
>> INSPECTION END
NO
>> Check the items indicated by the self-diagnosis.
CALIBRATION OF DECEL G SENSOR
CALIBRATION OF DECEL G SENSOR : Description
INFOID:0000000001690796
Refer to the table below to determine if calibration of the decel G sensor is required.
×
: Required –: Not required
CALIBRATION OF DECEL G SENSOR : Special Repair Requirement
INFOID:0000000001690797
CALIBRATION OF DECEL G SENSOR
CAUTION:
To calibrate the decel G sensor, make sure to use CONSULT-III
Situation
Calibration of decel G sensor
Removing/Installing ABS actuator and electric unit (control unit)
—
Replacing ABS actuator and electric unit (control unit)
×
Removing/Installing steering angle sensor
×
Replacing steering angle sensor
×
Removing/Installing steering components
×
Replacing steering components
×
Removing/Installing suspension components
×
Replacing suspension components
×
Change tires to new ones
—
Tire rotation
—
Adjusting wheel alignment
×
INSPECTION AND ADJUSTMENT
BRC-13
< BASIC INSPECTION >
[VDC/TCS/ABS]
C
D
E
G
H
I
J
K
L
M
A
B
BRC
N
O
P
(Calibration cannot be done without CONSULT-III)
1.
ALIGN THE VEHICLE STATUS
Stop vehicle with front wheels in straight-ahead position.
>> GO TO 2
2.
PERFORM CALIBRATION OF DECEL G SENSOR
1.
On the CONSULT-III screen, touch “WORK SUPPORT” and “DECEL G SEN CALIBRATION” in order.
2.
Touch “START”.
3.
After approximately 10 seconds, touch “END”.
NOTE:
After approximately 60 seconds, it ends automatically.
4.
Turn ignition switch OFF, then turn it ON again.
CAUTION:
Be sure to perform above operation.
>> GO TO 3
3.
CHECK DATA MONITOR
1.
Run vehicle with front wheels in straight-ahead position, then stop.
2.
Select “DATA MONITOR”. Then make sure “DECEL G SEN” is within
±
.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Perform calibration of decel G sensor again, GO TO 1
4.
ERASE THE SELF-DIAGNOSIS MEMORY
Erase the self-diagnosis memory of the ABS actuator and electric unit (control unit) and ECM.
• ABS actuator and electric unit (control unit): Refer to
BRC-21, "CONSULT-III Function (ABS)"
.
• ECM: Refer to
EC-74, "CONSULT-III Function (ENGINE)"
(VK56DE).
Are the memories erased?
YES
>> INSPECTION END
NO
>> Check the items indicated by the self-diagnosis.
BRC-14
< FUNCTION DIAGNOSIS >
[VDC/TCS/ABS]
VDC
FUNCTION DIAGNOSIS
VDC
System Diagram
INFOID:0000000001690798
WFIA0356E
VDC
BRC-15
< FUNCTION DIAGNOSIS >
[VDC/TCS/ABS]
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HYDRAULIC CIRCUIT DIAGRAM
System Description
INFOID:0000000001690799
• Vehicle Dynamics Control system detects driver
′
s steering operation amount and brake pedal travel from
steering angle sensor and pressure sensors. Using information from yaw rate/side/decel G sensor and
wheel sensor, VDC judges driving condition (conditions of under steer and over steer) to improve vehicle
driving stability by controlling brake application to 4 wheels and engine output.
• During VDC operation, it informs driver of system operation by flashing SLIP indicator lamp.
• Electrical system diagnosis by CONSULT-III is available.
• Active booster, delta stroke sensor, rear pressure sensor and stop lamp relay are available onvehicles
equipped with VK56DE only.
WFIA0357E
BRC-16
< FUNCTION DIAGNOSIS >
[VDC/TCS/ABS]
VDC
Component Parts Location
INFOID:0000000001690800
WFIA0359E
VDC
BRC-17
< FUNCTION DIAGNOSIS >
[VDC/TCS/ABS]
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BRC
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Component Description
INFOID:0000000001690801
*: With VK56DE only
Component parts
Reference
ABS actuator and electric unit (control unit)
Pump
Motor
Actuator relay
Solenoid valve
VDC switch-over valve
(CV1, CV2, SV1, SV2)
Wheel sensor
Yaw rate/side/decel G sensor
Steering angle sensor
VDC OFF switch
ABS warning lamp
Brake warning lamp
VDC OFF indicator lamp
SLIP indicator lamp
Front pressure sensor
Rear pressure sensor*
Active booster*
Delta stroke sensor*
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